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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "LegacyInlineTextBox.h"
#include "LegacyRootInlineBox.h"
#include "RenderSVGInlineText.h"
#include "SVGInlineTextBox.h"
#include "TextBoxSelectableRange.h"
#include <wtf/Vector.h>
namespace WebCore {
namespace InlineIterator {
enum class TextRunMode { Painting, Editing };
class BoxLegacyPath {
public:
BoxLegacyPath(const LegacyInlineBox* inlineBox)
: m_inlineBox(inlineBox)
{ }
bool isText() const { return m_inlineBox->isInlineTextBox(); }
bool isInlineBox() const { return m_inlineBox->isInlineFlowBox(); }
bool isRootInlineBox() const { return m_inlineBox->isRootInlineBox(); }
FloatRect visualRectIgnoringBlockDirection() const { return m_inlineBox->frameRect(); }
bool isHorizontal() const { return m_inlineBox->isHorizontal(); }
bool isLineBreak() const { return m_inlineBox->isLineBreak(); }
unsigned minimumCaretOffset() const { return m_inlineBox->caretMinOffset(); }
unsigned maximumCaretOffset() const { return m_inlineBox->caretMaxOffset(); }
unsigned char bidiLevel() const { return m_inlineBox->bidiLevel(); }
bool hasHyphen() const { return false; }
StringView originalText() const { return StringView(inlineTextBox()->renderer().text()).substring(inlineTextBox()->start(), inlineTextBox()->len()); }
size_t lineIndex() const
{
size_t precedingLines = 0;
for (auto* rootBox = rootInlineBox().prevRootBox(); rootBox; rootBox = rootBox->prevRootBox())
++precedingLines;
return precedingLines;
}
unsigned start() const { return inlineTextBox()->start(); }
unsigned end() const { return inlineTextBox()->end(); }
unsigned length() const { return inlineTextBox()->len(); }
TextBoxSelectableRange selectableRange() const { return inlineTextBox()->selectableRange(); }
TextRun textRun(TextRunMode = TextRunMode::Painting) const
{
if (isText())
return inlineTextBox()->createTextRun();
ASSERT_NOT_REACHED();
return TextRun { emptyString() };
}
const RenderObject& renderer() const
{
return m_inlineBox->renderer();
}
bool hasRenderer() const
{
return true;
}
const RenderBlockFlow& formattingContextRoot() const
{
return m_inlineBox->root().blockFlow();
}
const RenderStyle& style() const
{
return m_inlineBox->lineStyle();
}
void traverseNextTextBox() { m_inlineBox = inlineTextBox()->nextTextBox(); }
void traverseNextLeafOnLine()
{
m_inlineBox = m_inlineBox->nextLeafOnLine();
}
void traversePreviousLeafOnLine()
{
m_inlineBox = m_inlineBox->previousLeafOnLine();
}
void traverseNextInlineBox()
{
m_inlineBox = inlineFlowBox()->nextLineBox();
}
void traversePreviousInlineBox()
{
m_inlineBox = inlineFlowBox()->prevLineBox();
}
BoxLegacyPath firstLeafBoxForInlineBox() const
{
return { inlineFlowBox()->firstLeafDescendant() };
}
BoxLegacyPath lastLeafBoxForInlineBox() const
{
return { inlineFlowBox()->lastLeafDescendant() };
}
BoxLegacyPath parentInlineBox() const
{
return { m_inlineBox->parent() };
}
TextDirection direction() const { return bidiLevel() % 2 ? TextDirection::RTL : TextDirection::LTR; }
bool isFirstLine() const { return !rootInlineBox().prevRootBox(); }
friend bool operator==(BoxLegacyPath, BoxLegacyPath) = default;
bool atEnd() const { return !m_inlineBox; }
LegacyInlineBox* legacyInlineBox() const { return const_cast<LegacyInlineBox*>(m_inlineBox); }
const LegacyRootInlineBox& rootInlineBox() const { return m_inlineBox->root(); }
void traverseNextBoxOnLine()
{
if (auto* flowBox = dynamicDowncast<LegacyInlineFlowBox>(m_inlineBox); flowBox && flowBox->firstChild()) {
m_inlineBox = flowBox->firstChild();
return;
}
traverseNextBoxOnLineSkippingChildren();
}
void traverseNextBoxOnLineSkippingChildren()
{
if (m_inlineBox->nextOnLine()) {
m_inlineBox = m_inlineBox->nextOnLine();
return;
}
auto* parent = m_inlineBox->parent();
while (parent && !parent->nextOnLine())
parent = parent->parent();
m_inlineBox = parent ? parent->nextOnLine() : nullptr;
}
const Vector<SVGTextFragment>& svgTextFragments() const
{
return svgInlineTextBox()->textFragments();
}
private:
const LegacyInlineTextBox* inlineTextBox() const { return downcast<LegacyInlineTextBox>(m_inlineBox); }
const LegacyInlineFlowBox* inlineFlowBox() const { return downcast<LegacyInlineFlowBox>(m_inlineBox); }
const SVGInlineTextBox* svgInlineTextBox() const { return downcast<SVGInlineTextBox>(m_inlineBox); }
const LegacyInlineBox* m_inlineBox { nullptr };
};
}
}
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